well, ome of the most popular formats are GIF, JPEG/JPG, TIFF, and PSD. The most commonly used formats for images on the World Wide Web are GIF and JPEG. Here are some tips to help you decide which format to save your particular image in:
PSD (Photoshop Document)
PSD files are used with Adobe Photoshop exclusively. They allow the image to contain multiple layers, transparencies, and other image information. PSD's are very large and are not meant to be transported via an internet browser. Despite their size, it is often best to save a document as a PSD file if you are working within Photoshop as it allows you to make changes later on and transfer files seamlessly between Mac and PC platforms.
# JPG/JPEG (Joint Photographic Experts Group)
JPG is an excellent choice if you wish to compress large dithered and shaded images containing thousands of colours. This method discards extra data not essential to the display of the image. Once you compress the image, some data will be lost and it will no longer be identical to the original. The degree to which dithering and colour changes are noticeable will depend on what level of JPG compression you have selected. Photoshop allows you to choose from excellent quality to fair. The difference between an excellent quality JPG and an original image stored in another format such as GIF should hardly be noticeable. The higher the level of compression selected, the lower the file size and the quality of the image will be. Older versions of Mosaic and other web browsers do not support inlined JPG images. However, most current browsers DO support JPG because it is an execellent file format for the web since it compresses graphics so effeciently.
Answered by
Romi
, an ibibo Master,
at
11:19 AM on July 10, 2008